Windows DNS: Proper TCP/IP preferred/alternate settings for redundancy/speed on multiple DCS?

I'm using Windows 2003 Server EE and configuring DNS. I have configured three domain controllers that appear to be replicating properly. I intend to use these to facilitate DFS, load balanced IIS, and other services.  I want to know the right way to configure TCP/IP  settings on these and future servers that I add to the domain.

Let's suppose the following:
The first server I set up as a DC was 128.90.9.25
The second server I set up as a DC was 128.90.9.30
The third server I set as a DC was 128.90.9.35

What is the correct preferred and alternate DNS to specify in TCP/IP?

Now let's suppose I put these DCs behind a firewall and buy three more IIS boxes to provide load-balanced web services. What are the correct preferred and alternate DNS settings to specify in TCP/IP?

Thanks.  
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kennethfineAsked:
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Brian PierceConnect With a Mentor PhotographerCommented:
No different
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Brian PiercePhotographerCommented:
All DNS server should use themselves as preferred DNS server and another as alternate - does not matter which - indeed if you go into the Advanced options you can set up multiple atlernates.
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kennethfineAuthor Commented:
Thx. I will give you the full points but it would be cool if you could answer a related question: are there advantages to splitting alternate DNS servers over wide geographies? If I can set a server up in, say, New York and another in Chicago is that useful in terms of speed?

Thanks.
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kennethfineAuthor Commented:
Ah, also I still very much need to know what the story with my IIS boxes will be in terms of TCP/IP.  

I'll have three DCs and three load-balanced IIS boxes. How should the TCP/IP settings in the IIS boxes be configured?

THX.
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